Re: [sound:for-next 2/20] drivers/pci/pci.c:5859:6: error: redefinition of 'pci_pr3_present'

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On Thu, 17 Oct 2019 11:42:47 +0200,
kbuild test robot wrote:
> 
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git for-next
> head:   fa5a68b2abcefe2204075c80662e02cf59567a9f
> commit: 2e1a529c10e18e62da55eac42c278f11216dddaa [2/20] PCI: Add pci_pr3_present() helper to check Power Resource for D3hot
> config: parisc-c3000_defconfig (attached as .config)
> compiler: hppa-linux-gcc (GCC) 7.4.0
> reproduce:
>         wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>         chmod +x ~/bin/make.cross
>         git checkout 2e1a529c10e18e62da55eac42c278f11216dddaa
>         # save the attached .config to linux build tree
>         GCC_VERSION=7.4.0 make.cross ARCH=parisc 
> 
> If you fix the issue, kindly add following tag
> Reported-by: kbuild test robot <lkp@xxxxxxxxx>
> 
> All errors (new ones prefixed by >>):
> 
> >> drivers/pci/pci.c:5859:6: error: redefinition of 'pci_pr3_present'
>     bool pci_pr3_present(struct pci_dev *pdev)
>          ^~~~~~~~~~~~~~~
>    In file included from include/linux/of_pci.h:5:0,
>                     from drivers/pci/pci.c:17:
>    include/linux/pci.h:2317:13: note: previous definition of 'pci_pr3_present' was here
>     static bool pci_pr3_present(struct pci_dev *pdev) { return false; }
>                 ^~~~~~~~~~~~~~~

It looks like the ifdef CONFIG_ACPI is missing in pci_pr3_present()
definition in pci.c.

I drop the two patches for now.
Kai-Heng, could you resubmit with the proper fix?


thanks,

Takashi

>    drivers/pci/pci.c: In function 'pci_pr3_present':
> >> drivers/pci/pci.c:5870:13: error: dereferencing pointer to incomplete type 'struct acpi_device'
>      return adev->power.flags.power_resources &&
>                 ^~
> >> drivers/pci/pci.c:5871:3: error: implicit declaration of function 'acpi_has_method'; did you mean 'acpi_has_watchdog'? [-Werror=implicit-function-declaration]
>       acpi_has_method(adev->handle, "_PR3");
>       ^~~~~~~~~~~~~~~
>       acpi_has_watchdog
>    In file included from include/linux/of_pci.h:5:0,
>                     from drivers/pci/pci.c:17:
>    At top level:
>    include/linux/pci.h:2317:13: warning: 'pci_pr3_present' defined but not used [-Wunused-function]
>     static bool pci_pr3_present(struct pci_dev *pdev) { return false; }
>                 ^~~~~~~~~~~~~~~
>    cc1: some warnings being treated as errors
> 
> vim +/pci_pr3_present +5859 drivers/pci/pci.c
> 
>   5858	
> > 5859	bool pci_pr3_present(struct pci_dev *pdev)
>   5860	{
>   5861		struct acpi_device *adev;
>   5862	
>   5863		if (acpi_disabled)
>   5864			return false;
>   5865	
>   5866		adev = ACPI_COMPANION(&pdev->dev);
>   5867		if (!adev)
>   5868			return false;
>   5869	
> > 5870		return adev->power.flags.power_resources &&
> > 5871			acpi_has_method(adev->handle, "_PR3");
>   5872	}
>   5873	EXPORT_SYMBOL_GPL(pci_pr3_present);
>   5874	
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